Enterprise Backend

Backend ServicesUnified API infrastructure powering three platforms

Client

Hong Kong International Airport

Location

Hong Kong

Period

Jan 2021 – Present

Overview

About the Project

Core backend and middleware services architected to support 5DCC (web operations platform), iStaff (mobile workforce app), and iWatch (smartwatch companion). A unified API layer providing real-time data synchronization, task management, authentication, and operational coordination across all three client applications.

Designed as a scalable, multi-tenant backend infrastructure using Node.js and MySQL, with advanced middleware services for API gateway, authentication, message queuing, and data synchronization. This backbone ensures seamless communication between web, mobile, and wearable platforms while maintaining data consistency and real-time updates across all operational systems.

Screenshots

Inside the Platform

My Role

Key Responsibilities

01Architected and built RESTful APIs serving web, mobile, and wearable platforms simultaneously
02Designed and implemented MySQL database schema with complex stored procedures for operational workflows
03Developed middleware services for authentication, authorization, and role-based access control
04Implemented real-time data synchronization mechanisms for cross-platform updates
05Built message queuing and notification systems for task distribution and alerts
06Optimized API performance and database queries for high-concurrency operations
07Integrated third-party services and legacy systems with modern API patterns
08Established CI/CD pipelines and deployment automation across multiple environments